Scorchwalker

Bloodrush — , Discard Scorchwalker: Target attacking creature gets +5/+1 until end of turn.

Skarrg Goliath

Trample
Bloodrush — , Discard Skarrg Goliath: Target attacking creature gets +9/+9 and gains trample until end of turn.

Wasteland Viper

Deathtouch
Bloodrush — , Discard Wasteland Viper: Target attacking creature gets +1/+2 and gains deathtouch until end of turn.

Ghor-Clan Rampager

Trample
Bloodrush — , Discard Ghor-Clan Rampager: Target attacking creature gets +4/+4 and gains trample until end of turn.

Scab-Clan Charger

Bloodrush — , Discard Scab-Clan Charger: Target attacking creature gets +2/+4 until end of turn.

Skarrg Goliath

Trample
Bloodrush — , Discard Skarrg Goliath: Target attacking creature gets +9/+9 and gains trample until end of turn.

Rubblehulk

Rubblehulk’s power and toughness are each equal to the number of lands you control.
Bloodrush — , Discard Rubblehulk: Target attacking creature gets +X/+X until end of turn, where X is the number of lands you control.

Ghor-Clan Rampager

Trample
Bloodrush — , Discard Ghor-Clan Rampager: Target attacking creature gets +4/+4 and gains trample until end of turn.